I never completed the final Valentines event task but it has long disappeared from my task book. The characters (Bart, Lisa, Milhouse, Ralph, Maggie, etc.) still have the 4-hour Valentines poem jobs as available jobs they can do, but the reward for completing the job is money, not poems as per the original event task. Even if they complete the jobs (dozens of times over months at this point), it never goes away. I figured it would just disappear and fix itself but it’s mid-August now.